NOTES ON AFRICAN CHALCIDOIDEA— IV. 417 



The fore femora are somewhat thickened and broadest near the base. In all the 

 ftarsi, from the third to the fifth joints (including claw) the proportions are the same, 

 viz. : — 4, 3, 11. In all the legs, the first tarsal joint is twice the second. In the 

 fore tarsus, the first joint is one-fifth longer than in the mid or hind tarsi. 

 Propodeon triangular, truncate, with a slight median keel. 

 Abdomen sessile, but so narrowed at its insertion as to appear petiolate in side 

 view ; abruptly broadened, truncate, in general shape triangular, rounded postero- 

 laterally. The tergites cover all the upper and three-fourths of the under surface as 

 well. All the tergites, especially the first, are posteriorly incised in the middle, and 

 this shows clearly on tergites i. and ii., but on iv. to vii., owing to infolding, the 

 posterior margin of each tergite forms a pointed arch (fig. 2, c). Sixth tergite medianly 

 carinate. Spiracle lateral in position, circular, with a narrow outwardly pointing 

 sulcus. Seventh tergite not carinate. The stylets are nearly touching. 

 Length, about 5 mm. ; alar expanse, over 9 mm. 



Nyasaland : Lake Nyasa, Monkey Bay, 3 0?? l.vi. 1915 (Dr. W. A. Lamborn), 

 Type, a 2 in the British Museum. 



Besides the above there is, in the collection of the Imperial Bureau of Entomology, 

 a complete ^J labelled Mlanje, Nyasaland, 15. xi. 1913, and another fragmentary (J 

 (thorax and wings) also from Mlanje, 13. xi. 1913, taken by Mr. S. A. Neave, while 

 being preyed upon by an Asilid fly, Promachns fasciatns, F., in both cases. 



I believe these to be the ^ of the species described above. In sculpturing the 

 Monkey Bay and Mlanje specimens agree. The ^^, however, are generally bluer 

 all over, the abdomen is more distinctly petiolate, and the size slightly less. In the 

 antennae, the scape is practically as dark below as the funicle and club, whose 

 segments are distinct. But, apart from these purely sexual difTerences, there is 

 evidently nothing to add to the generic definition already given. The genus 

 Timioderus has the general facies of those Eucharines which are distinguished by 

 the entirely unarmed scutellum, but the mandibles are of a type very different 

 from that generally found in this family, so that a Perilampine relationship is more 

 probable. 



Genus Spilochalcis. 



Of this genus, so numerously represented in the New World, particularly Brazil, 

 few species have been described from the Eastern Hemisphere. Excluding the 

 genotype S. xanthostigma, Dalm. (1820), from Europe, I know of only three Old 

 AVorld forms; S. nigrorufa, Walk. (1853), (described as a Smicra), from India; 

 S. capensis, Cam. (1907), from the Cape; and S. libanotica, Schmied. (1909), from 

 Asia Minor. Probably Chalcis pensilis, Klug (1834), from Egypt, should be placed 

 here. From all these, S. andersoni, sp. n., may be separated at once by the entirely 

 orange propodeon. In the longer American series such a propodeon is apparently not 

 uncommon ; e.g., in S. erythrina, Walk. (1861), Mexico, and S. igneoides, Kirb. (1883), 

 North America. In the American fauna, however, the yellow and black species 

 greatly preponderate. But of the six Old World forms mentioned here, five are 

 red and black. In S. andersoni the basal tooth of the hind femur is remarkably 

 small. 



